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-rw-r--r--ui/gtk/decode_as_dcerpc.c426
1 files changed, 426 insertions, 0 deletions
diff --git a/ui/gtk/decode_as_dcerpc.c b/ui/gtk/decode_as_dcerpc.c
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+++ b/ui/gtk/decode_as_dcerpc.c
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+/* decode_as_dcerpc.c
+ *
+ * $Id$
+ *
+ * Routines to modify dcerpc bindings on the fly.
+ *
+ * Copyright 2004 Ulf Lamping
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#include <epan/packet.h>
+#include <epan/epan_dissect.h>
+#include <epan/dissectors/packet-dcerpc.h>
+
+#include "../simple_dialog.h"
+
+#include "ui/gtk/decode_as_dlg.h"
+#include "ui/gtk/dlg_utils.h"
+#include "ui/gtk/gui_utils.h"
+#include "ui/gtk/decode_as_dcerpc.h"
+
+
+/**************************************************/
+/* Typedefs & Enums */
+/**************************************************/
+
+/* list of dcerpc "Decode As" bindings */
+GSList *decode_dcerpc_bindings = NULL;
+
+/**************************************************/
+/* Global Functions */
+/**************************************************/
+
+/* inject one of our bindings into the dcerpc binding table */
+static void
+decode_dcerpc_inject_binding(gpointer data, gpointer user_data _U_)
+{
+ dcerpc_add_conv_to_bind_table((decode_dcerpc_bind_values_t *) data);
+}
+
+
+/* inject all of our bindings into the dcerpc binding table */
+static void
+decode_dcerpc_inject_bindings(gpointer data _U_) {
+ g_slist_foreach(decode_dcerpc_bindings, decode_dcerpc_inject_binding, NULL /* user_data */);
+}
+
+
+/* init this file */
+void
+decode_dcerpc_init(void) {
+ GHook* hook_init_proto;
+
+
+ /* add a hook function to the dcerpc init_protocols hook */
+ hook_init_proto = g_hook_alloc(&dcerpc_hooks_init_protos);
+ hook_init_proto->func = decode_dcerpc_inject_bindings;
+ g_hook_prepend(&dcerpc_hooks_init_protos, hook_init_proto);
+}
+
+
+/* clone a binding (uses g_malloc) */
+static decode_dcerpc_bind_values_t *
+decode_dcerpc_binding_clone(decode_dcerpc_bind_values_t *binding_in)
+{
+ decode_dcerpc_bind_values_t *stored_binding;
+
+ stored_binding = g_malloc(sizeof(decode_dcerpc_bind_values_t));
+ *stored_binding = *binding_in;
+ COPY_ADDRESS(&stored_binding->addr_a, &binding_in->addr_a);
+ COPY_ADDRESS(&stored_binding->addr_b, &binding_in->addr_b);
+ stored_binding->ifname = g_string_new(binding_in->ifname->str);
+
+ return stored_binding;
+}
+
+
+/* free a binding */
+void
+decode_dcerpc_binding_free(void *binding_in)
+{
+ decode_dcerpc_bind_values_t *binding = binding_in;
+
+ g_free((void *) binding->addr_a.data);
+ g_free((void *) binding->addr_b.data);
+ if(binding->ifname)
+ g_string_free(binding->ifname, TRUE);
+ g_free(binding);
+}
+
+
+/* compare two bindings (except the interface related things, e.g. uuid) */
+static gint
+decode_dcerpc_binding_cmp(gconstpointer a, gconstpointer b)
+{
+ const decode_dcerpc_bind_values_t *binding_a = a;
+ const decode_dcerpc_bind_values_t *binding_b = b;
+
+
+ /* don't compare uuid and ver! */
+ if(
+ ADDRESSES_EQUAL(&binding_a->addr_a, &binding_b->addr_a) &&
+ ADDRESSES_EQUAL(&binding_a->addr_b, &binding_b->addr_b) &&
+ binding_a->ptype == binding_b->ptype &&
+ binding_a->port_a == binding_b->port_a &&
+ binding_a->port_b == binding_b->port_b &&
+ binding_a->ctx_id == binding_b->ctx_id &&
+ binding_a->smb_fid == binding_b->smb_fid)
+ {
+ /* equal */
+ return 0;
+ }
+
+ /* unequal */
+ return 1;
+}
+
+
+/**************************************************/
+/* Show Changed Bindings */
+/**************************************************/
+
+
+/* add a single binding to the Show list */
+static void
+decode_dcerpc_add_show_list_single(gpointer data, gpointer user_data)
+{
+ gchar string1[20];
+
+
+ decode_dcerpc_bind_values_t *binding = data;
+
+ g_snprintf(string1, sizeof(string1), "ctx_id: %u", binding->ctx_id);
+
+ decode_add_to_show_list (
+ user_data,
+ "DCE-RPC",
+ string1,
+ "-",
+ binding->ifname->str);
+}
+
+
+/* add all bindings to the Show list */
+void
+decode_dcerpc_add_show_list(gpointer user_data)
+{
+ g_slist_foreach(decode_dcerpc_bindings, decode_dcerpc_add_show_list_single, user_data);
+}
+
+
+/**************************************************/
+/* Modify the binding routines */
+/**************************************************/
+
+
+/* removes all bindings */
+void
+decode_dcerpc_reset_all(void)
+{
+ decode_dcerpc_bind_values_t *binding;
+
+ while(decode_dcerpc_bindings) {
+ binding = decode_dcerpc_bindings->data;
+
+ decode_dcerpc_binding_free(binding);
+ decode_dcerpc_bindings = g_slist_remove(
+ decode_dcerpc_bindings,
+ decode_dcerpc_bindings->data);
+ }
+}
+
+
+/* remove a binding (looking the same way as the given one) */
+static void
+decode_dcerpc_binding_reset(
+const gchar *table_name _U_,
+decode_dcerpc_bind_values_t *binding)
+{
+ GSList *le;
+ decode_dcerpc_bind_values_t *old_binding;
+
+
+ /* find the old binding (if it exists) */
+ le = g_slist_find_custom(decode_dcerpc_bindings,
+ binding,
+ decode_dcerpc_binding_cmp);
+ if(le == NULL)
+ return;
+
+ old_binding = le->data;
+
+ decode_dcerpc_bindings = g_slist_remove(decode_dcerpc_bindings, le->data);
+
+ g_free((void *) old_binding->addr_a.data);
+ g_free((void *) old_binding->addr_b.data);
+ g_string_free(old_binding->ifname, TRUE);
+ g_free(old_binding);
+}
+
+
+/* a binding has changed (remove a previously existing one) */
+static void
+decode_dcerpc_binding_change(
+const gchar *table_name,
+decode_dcerpc_bind_values_t *binding)
+{
+
+ decode_dcerpc_bind_values_t *stored_binding;
+
+ /* remove a probably existing old binding */
+ decode_dcerpc_binding_reset(table_name, binding);
+
+ /* clone the new binding and append it to the list */
+ stored_binding = decode_dcerpc_binding_clone(binding);
+ decode_dcerpc_bindings = g_slist_append (decode_dcerpc_bindings, stored_binding);
+}
+
+
+/* a binding has changed (add/replace/remove it) */
+static void
+decode_change_one_dcerpc_binding(const gchar *table_name, decode_dcerpc_bind_values_t *binding, GtkWidget *list)
+{
+ dcerpc_uuid_key *key;
+ gchar *abbrev;
+ GtkTreeSelection *selection;
+ GtkTreeModel *model;
+ GtkTreeIter iter;
+
+ selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(list));
+ if (gtk_tree_selection_get_selected(selection, &model, &iter) == FALSE)
+ {
+ abbrev = NULL;
+ key = NULL;
+ } else {
+ gtk_tree_model_get(model, &iter, E_LIST_S_PROTO_NAME, &abbrev,
+ E_LIST_S_TABLE+1, &key, -1);
+ }
+
+ if (key == NULL || (abbrev != NULL && strcmp(abbrev, "(default)") == 0) ) {
+ decode_dcerpc_binding_reset(table_name, binding);
+ } else {
+ binding->ifname = g_string_new(abbrev);
+ binding->uuid = key->uuid;
+ binding->ver = key->ver;
+ decode_dcerpc_binding_change(table_name, binding);
+ }
+ g_free(abbrev);
+}
+
+
+
+/**************************************************/
+/* Action routines for the "Decode As..." dialog */
+/* - called when the OK button pressed */
+/**************************************************/
+
+/*
+ * This routine is called when the user clicks the "OK" button in the
+ * "Decode As..." dialog window and the DCE-RPC page is foremost.
+ * This routine takes care of making any changes requested to the DCE-RPC
+ * binding tables.
+ *
+ * @param notebook_pg A pointer to the "DCE-RPC" notebook page.
+ */
+static void
+decode_dcerpc(GtkWidget *notebook_pg)
+{
+ GtkWidget *list;
+ const gchar *table_name;
+ decode_dcerpc_bind_values_t *binding;
+
+
+ list = g_object_get_data(G_OBJECT(notebook_pg), E_PAGE_LIST);
+ if (requested_action == E_DECODE_NO)
+ gtk_tree_selection_unselect_all(gtk_tree_view_get_selection(GTK_TREE_VIEW(list)));
+
+ binding = g_object_get_data(G_OBJECT(notebook_pg), E_PAGE_BINDING);
+
+ /*table_name = g_object_get_data(G_OBJECT(notebook_pg), E_PAGE_TABLE);*/
+ table_name = "DCE-RPC";
+ decode_change_one_dcerpc_binding(table_name, binding, list);
+}
+
+
+/**************************************************/
+/* Dialog setup */
+/**************************************************/
+
+
+/* add an interface to the list */
+static void
+decode_dcerpc_add_to_list(gpointer key, gpointer value, gpointer user_data)
+{
+ /*dcerpc_uuid_key *k = key;*/
+ dcerpc_uuid_value *v = value;
+
+ if(strcmp(v->name, "(none)"))
+ decode_add_to_list("DCE-RPC", v->name, key, user_data);
+}
+
+
+/* add all interfaces to the list */
+static GtkWidget *
+decode_add_dcerpc_menu (GtkWidget *page, const gchar *table_name _U_)
+{
+ GtkWidget *scrolled_window;
+ GtkWidget *list;
+
+ decode_list_menu_start(page, &list, &scrolled_window);
+ g_hash_table_foreach(dcerpc_uuids, decode_dcerpc_add_to_list, list);
+ decode_list_menu_finish(list);
+ return(scrolled_window);
+}
+
+
+/* add a DCE-RPC page to the notebook */
+GtkWidget *
+decode_dcerpc_add_page (packet_info *pinfo)
+{
+ GtkWidget *page_hb, *info_vb, *label, *scrolled_window;
+ GString *gs = g_string_new("");
+ GString *gs2 = g_string_new("");
+ decode_dcerpc_bind_values_t *binding;
+
+
+ /* clone binding */
+ binding = g_malloc(sizeof(decode_dcerpc_bind_values_t));
+ COPY_ADDRESS(&binding->addr_a, &pinfo->src);
+ COPY_ADDRESS(&binding->addr_b, &pinfo->dst);
+ binding->ptype = pinfo->ptype;
+ binding->port_a = pinfo->srcport;
+ binding->port_b = pinfo->destport;
+ binding->ctx_id = pinfo->dcectxid;
+ binding->smb_fid = dcerpc_get_transport_salt(pinfo);
+ binding->ifname = NULL;
+ /*binding->uuid = NULL;*/
+ binding->ver = 0;
+
+ /* create page content */
+ page_hb = gtk_hbox_new(FALSE, 5);
+ g_object_set_data(G_OBJECT(page_hb), E_PAGE_ACTION, decode_dcerpc);
+ g_object_set_data(G_OBJECT(page_hb), E_PAGE_TABLE, "DCE-RPC");
+ g_object_set_data(G_OBJECT(page_hb), E_PAGE_TITLE, "DCE-RPC");
+ g_object_set_data(G_OBJECT(page_hb), E_PAGE_BINDING, binding);
+
+ info_vb = gtk_vbox_new(FALSE, 5);
+ gtk_box_pack_start(GTK_BOX(page_hb), info_vb, TRUE, TRUE, 0);
+
+ /* Always enabled */
+ label = gtk_label_new("Replace binding between:");
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ switch(binding->ptype) {
+ case(PT_TCP):
+ g_string_printf(gs2, "TCP port");
+ break;
+ case(PT_UDP):
+ g_string_printf(gs2, "UDP port");
+ break;
+ default:
+ g_string_printf(gs2, "Unknown port type");
+ }
+
+ /* XXX - how to print the address binding->addr_a? */
+ g_string_printf(gs, "Address: ToBeDone %s: %u", gs2->str, binding->port_a);
+ label = gtk_label_new(gs->str);
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ label = gtk_label_new("&");
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ /* XXX - how to print the address binding->addr_b? */
+ g_string_printf(gs, "Address: ToBeDone %s: %u", gs2->str, binding->port_b);
+ label = gtk_label_new(gs->str);
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ label = gtk_label_new("&");
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ g_string_printf(gs, "Context ID: %u", binding->ctx_id);
+ label = gtk_label_new(gs->str);
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ label = gtk_label_new("&");
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+ gtk_widget_set_sensitive(label, binding->smb_fid);
+
+ g_string_printf(gs, "SMB FID: %u", binding->smb_fid);
+ label = gtk_label_new(gs->str);
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+ gtk_widget_set_sensitive(label, binding->smb_fid);
+
+ /* Conditionally enabled - only when decoding packets */
+ label = gtk_label_new("with:");
+ gtk_box_pack_start(GTK_BOX(info_vb), label, TRUE, TRUE, 0);
+
+ decode_dimmable = g_slist_prepend(decode_dimmable, label);
+ scrolled_window = decode_add_dcerpc_menu(page_hb, "dcerpc" /*table_name*/);
+ gtk_box_pack_start(GTK_BOX(page_hb), scrolled_window, TRUE, TRUE, 0);
+ decode_dimmable = g_slist_prepend(decode_dimmable, scrolled_window);
+
+ g_string_free(gs, TRUE);
+
+ return(page_hb);
+}
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